CN102997357A - Absorption refrigeration and solution dehumidification air-conditioning system based on solar heat recovery - Google Patents

Absorption refrigeration and solution dehumidification air-conditioning system based on solar heat recovery Download PDF

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Publication number
CN102997357A
CN102997357A CN2012104939700A CN201210493970A CN102997357A CN 102997357 A CN102997357 A CN 102997357A CN 2012104939700 A CN2012104939700 A CN 2012104939700A CN 201210493970 A CN201210493970 A CN 201210493970A CN 102997357 A CN102997357 A CN 102997357A
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heat
communicated
conditioning
solution
solar heat
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CN2012104939700A
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Chinese (zh)
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CN102997357B (en
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梁坤峰
马建伟
王全海
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河南科技大学东海硅产业节能技术研究院
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/272Solar heating or cooling
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal

Abstract

The invention provides an absorption refrigeration and solution dehumidification air-conditioning system based on solar heat recovery which integrates solar heat recovery, absorption refrigeration and solution dehumidification. Heat recovered by a solar heat collector is used for absorption refrigeration and solution dehumidification; refrigerant water prepared by an evaporator is used for cooling down a concentrated solution in a solution dehumidifier; outdoor fresh air is directly contacted with the concentrated solution after recovering the refrigerating capacity of indoor exhaust air so as to conduct heat and humidity exchange, and after the dehumidification and temperature reduction, the outdoor fresh air is fed into a room from the side wall at the upper part of the room to form a wall attached jet; the air jet continues heat exchange for temperature reduction with a radiant cooling panel at the top of the room; and finally the temperature and humidity conditions of the room are achieved and the independent control on the temperature and the humidity of the room is accomplished.

Description

Absorption refrigeration and solution dehumidifying air-conditioning system based on the solar heat recovery

Technical field

The invention belongs to a kind of absorption refrigeration and solution dehumidifying air-conditioning system that reclaims based on solar heat, solar energy recovery, absorption refrigeration and solution dehumidification are coupled as one.

Background technology

Current, most of air-conditioning technical is take electric energy as power, rely on the fluoride such as kind of refrigeration cycle medium fluorine Lyons indoor heat absorbed be discharged to outdoor.There is following shortcoming in this traditional compressed air conditioner technology: one, energy consumption issues are serious; Two, a large amount of uses of the fluoride such as fluorine Lyons, the destruction that has caused atmospheric ozone layer has been worsened ecological environment; Three, be discharged to the atmospheric temperature that outdoor heat has improved the city, so that the tropical island effect aggravation.

Solar energy is cheapness, environmental protection and the safe energy that the mankind are inexhaustible, nexhaustible, be available anywhere.The annual solar radiant energy that arrives earth surface is up to 1.8 * 1018Kw. h, is 20,000 times of present world's energy consumption summation.The serious problems that the world energy sources crisis brings are recognized people: solar energy is the human additional energy of being badly in need of in the recent period, is the basis of future source of energy structure.In China, one to three class area is the abundant area of solar energy resources, and area accounts for more than 2/3rds of national total area, and wherein some regional fuel source lacks very much.Along with the adjustment of China's energy resource structure, the exploitation solar airconditioning has important practical significance.

Conventional absorption type air conditioning system mainly comprises several parts such as Absorption Refrigerator, air-conditioning box or fan coil, boiler etc., and wherein, Absorption Refrigerator mainly is comprised of generator, condenser, evaporimeter and absorber.The solar energy absorption type air conditioning system of prior art is to increase on this basis solar thermal collector, storage tank and automatic control system again.Solar energy absorption type refrigeration utilizes solar thermal collector to provide its generator needed heat medium water for Absorption Refrigerator exactly, and the heat medium water temperature is higher, and then the coefficient of performance (also claiming COP) of refrigeration is higher, and such cooling system efficient is also higher.

In China, the research of solar-powered liquid desiccant air-conditioning system is started late.Mainly contain the people such as Fang Chengchao, Dai Yanjun and Zhao Wei having done some comparatively systematic research work aspect experiment and the theoretical model, obtained the achievement in research that certain level is arranged.The solar-powered liquid desiccant air-conditioning system is the steam in the absorbing air directly, can avoid compacting air-conditioning system in order to reduce the humidity of air, and at first must be with air cooling-down below dew point, thereby cause the reduction of system effectiveness.

Summary of the invention

The objective of the invention is: design a kind of absorption refrigeration and solution dehumidifying air-conditioning system that reclaims based on solar heat, that solar heat reclaims, the integrated air-conditioning system of absorption refrigeration and solution dehumidification, the heat that solar thermal collector reclaims is used for the regeneration of the concentrated solution of absorption refrigeration and solution dehumidification, evaporimeter prepares the cooling that chilled water is used for the concentrated solution of solution dehumidification, outdoor new wind reclaims behind the cold of indoor exhaust wind directly contact with the cooling concentrated solution and carries out heat and wet and exchange, send into the formation wall attachment jet from the side wall on top, room behind the dehumidifying and cooling, the radiation cold plate at air-spray and top, room continues the heat exchange cooling, finally reach the temperature and humidity conditions of room requirement, finish the humiture of space air and independently control.

Technical solution of the present invention is: this air-conditioning system comprises the one-level solar thermal collector, the two-stage solar heat collector, the domestic water case, cooler bin, cooling tower, a heat exchanger, No. two heat exchangers, solution moisture removing device, No. three heat exchangers, radiation cold plate, the refrigerant water tank, condenser, evaporimeter, absorber, No. four heat exchangers, generator, regenerator and unidirectional heat transmitter, the low temperature energy-storage box of one-level solar thermal collector is communicated with the high temperature energy-storage case of two-stage solar heat collector through unidirectional heat transmitter, the high temperature energy-storage case of two-stage solar heat collector is communicated with the domestic water case, the domestic water case is communicated with cooler bin, cooler bin is communicated with respectively cooling tower and absorber, cooling tower is communicated with condenser, condenser is communicated with respectively evaporimeter, absorber and generator, absorber is communicated with evaporimeter, absorber is communicated with generator through No. four heat exchangers, generator is communicated with regenerator, regenerator is communicated with high temperature energy-storage case and heat exchanger of two-stage solar heat collector, heat exchanger is communicated with respectively No. two heat exchangers and solution moisture removing device, solution moisture removing device is communicated with respectively heat exchanger No. three, the loose airduct of the sidewall in No. two heat exchangers and user room, No. three heat exchangers are communicated with the exhaust duct in new wind blast pipe and user room, No. two heat exchangers are communicated with the radiation cold plate that is positioned at the roof and the refrigerant water tank in user room, the refrigerant water tank is communicated with radiation cold plate and evaporimeter, and whole circulation consists of air-conditioning system.

Wherein, in the high temperature energy-storage case of two-stage solar heat collector, electric heating device is installed.

Wherein, the liquid medium in the low temperature energy-storage box of one-level solar thermal collector is water, and liquid medium is the nanometer heat-transfer fluid in the high temperature energy-storage case of two-stage solar heat collector.

Wherein, on the cooler bin water tap is installed.

The present invention is based on the air-conditioning system that solar heat recovery, absorption refrigeration combine with solution dehumidification, has the following advantages:

1, absorption refrigeration and solution dehumidification are coupled, the cold of evaporimeter is used for the cooling of solution moisture removing device concentrated solution in the absorption refrigeration, sends into radiation cold plate through the chilled water after heating up, and bears the part cooling effect of room air;

2, the solar energy collection is held the heat of device recovery for the regeneration of the concentrated solution of absorption refrigeration and solution moisture removing device;

3, outdoor new wind reclaims the cold of indoor exhaust wind, by solution moisture removing device it is carried out dehumidifying and cooling, and rear and radiation cold plate continues the heat exchange cooling, realizes that temperature, the humidity of space air is independently controlled;

4, the cooling water arranged in series of condenser and absorber, cooling water reclaims the heat of condenser and absorber, is used for domestic water;

5, solar heat reclaims and adopts two heat collectors, be respectively low temperature level and high temperature level, the thermal-collecting tube of low temperature level is flat plate collector, connect a low temperature energy-storage box, the thermal-collecting tube of high temperature level is hot pipe type vacuum heat collection pipe, connect a high temperature energy-storage case, liquid medium in the low temperature energy-storage box is water, liquid medium is the nanometer heat-transfer fluid in the high temperature energy-storage case, simultaneously in the high temperature energy-storage case, electric auxiliary heating device is set, be provided with unidirectional heat transfer unit (HTU) between low temperature energy-storage box and the high temperature energy-storage case, the heat unidirectional delivery in the low temperature energy-storage box is to the high temperature energy-storage case;

6, the top, room arranges radiation cold plate, and the water supply in the radiation cold plate comes from the chilled water after the cooling concentrated solution, bears the cooling effect of room air, and outdoor new wind reclaims the cold of indoor exhaust wind.

Description of drawings

Fig. 1 structural representation of the present invention.

Among the figure: 1 one-level solar thermal collector; 2 two-stage solar heat collectors; 3 electric heating devices; 4 domestic water casees; 5 cooler bins; 6 cooling towers; 7,8,10,17 heat exchangers; 9 solution moisture removing devices; 11 radiation cold plates; Rooms 12; 13 refrigerant water tanks; 14 condensers; 15 evaporimeters; 16 absorbers; 18 generators; 19 regenerators; 20 unidirectional heat transmitters.

The specific embodiment

As shown in Figure 1, this air-conditioning system comprises one-level solar thermal collector 1, two-stage solar heat collector 2, domestic water case 4, cooler bin 5, cooling tower 6, a heat exchanger 7, No. two heat exchangers 8, solution moisture removing device 9, No. three heat exchangers 10, radiation cold plate 11, refrigerant water tank 13, condenser 14, evaporimeter 15, absorber 16, No. four heat exchangers 17, generator 18, regenerator 19 and unidirectional heat transmitter 20, the low temperature energy-storage box of one-level solar thermal collector 1 is communicated with the high temperature energy-storage case of two-stage solar heat collector 2 through unidirectional heat transmitter 20, the high temperature energy-storage case of two-stage solar heat collector 2 is communicated with domestic water case 4, domestic water case 4 is communicated with cooler bin 5, cooler bin 5 is communicated with respectively cooling tower 6 and absorber 16, cooling tower 6 is communicated with condenser 14, condenser 14 is communicated with respectively evaporimeter 15, absorber 16 and generator 18, absorber 16 is communicated with evaporimeter 15, absorber 16 is communicated with generator 18 through No. four heat exchangers 17, generator 18 is communicated with regenerator 19, regenerator 19 is communicated with high temperature energy-storage case and heat exchanger 7 of two-stage solar heat collector 2, heat exchanger 7 is communicated with respectively No. two heat exchangers 8 and solution moisture removing device 9, solution moisture removing device 9 is communicated with respectively heat exchanger 10 No. three, the loose airduct of the sidewall in No. two heat exchangers 8 and user room 12, No. three heat exchangers 10 are communicated with the exhaust duct in new wind blast pipe and user room 12, No. two heat exchangers 8 are communicated with the radiation cold plate that is positioned at the roof 11 and the refrigerant water tank 13 in user room 12, refrigerant water tank 13 is communicated with radiation cold plate 11 and evaporimeter 15, and whole circulation consists of air-conditioning system.

Wherein, electric heating device 3 is installed in the high temperature energy-storage case of two-stage solar heat collector 2.

Wherein, the liquid medium in the low temperature energy-storage box of one-level solar thermal collector 1 is water, and liquid medium is the nanometer heat-transfer fluid in the high temperature energy-storage case of two-stage solar heat collector 2.

Wherein, on the cooler bin 5 water tap is installed.

Its operation principle is as follows: one-level solar thermal collector 1 and two-stage solar heat collector 2 reclaims solar energy, and heat is stored in respectively low temperature energy-storage box and high temperature energy-storage case, the low temperature energy-storage box through unidirectional heat transmitter 20 transferring heats to the high temperature energy-storage case; Liquid medium in the low temperature energy-storage box is water, and temperature is positioned at the 92-97 degree; Liquid medium is the nanometer heat-transfer fluid in the high temperature energy-storage case, and temperature is 180-200 ℃ of scope; Electric auxiliary heating device 3 is set in the high temperature energy-storage case, and night and sombre weather, high temperature energy-storage the temperature inside the box are during less than 180 ℃, and electric auxiliary heating device 3 is started working, and give nanometer heat-transfer fluid heating in the high temperature energy-storage case; Regenerator 19 links to each other with the high temperature energy-storage case, and the high temperature energy-storage case remains on more than 95 ℃ regenerator 19 interior temperature to the regenerator transferring heat; The cold-producing medium of generator 18, condenser 14, evaporimeter 15, absorber 16 is lithium bromide, absorber 16 interior concentrated solutions are in regenerator 19 interior regeneration, condenser 14 and absorber 16 are water-cooled, cooling water is cooler condenser 14 and absorber 16 successively, cooling water is advancing before the condenser 14 temperature between 22 ℃ to 25 ℃, cooler condenser 14 rear temperature raise about 3.5 ℃, and cooling absorber 16 rear temperature continue to raise about 3.5 ℃, reach between 29 ℃-32 ℃; Cooling water continues to enter condenser 14, closed circulation by cooler bin 5 and cooling tower 6 coolings after temperature is down to 22 ℃ to 25 ℃; Cooler bin 5 is connecting domestic water case 4, water tap is arranged outside the cooler bin 5, when domestic water is not enough, tap is opened, tap water flows cooler bin 5, give the interior cooling water temperature of coil pipe of cooler bin 5, the used heat of recovery section condenser 14 and absorber 16, the running water self-temperature raises about 6 ℃; Domestic water case 4 is communicated with the high temperature energy-storage case of two-stage solar heat collector 2, and high temperature energy-storage case transferring heat makes it reach human body the most comfortable and washes one's face and rinses one's mouth temperature 38-42 ℃ to the water in the domestic water case 4; Cold-producing medium is by the heat of the outer chilled water of evaporimeter 15 absorption evaporimeters, and chilled water is lowered the temperature, and cold stores in refrigerant water tank 13 by the chilled water medium, and refrigerant water tank 13 interior temperature are about 9 ℃; Concentrated solution is in regenerator 19 interior heat absorption regeneration, pass through heat exchanger 7 heat exchange with weak solution after the regeneration, again by chilled water heat exchange cooling in No. two heat exchangers 8 and the refrigerant water tank 13, chilled water temperature is increased to about 15 ℃, concentrated solution after the cooling exchanges with air heat is wet in solution moisture removing device 9, concentrated solution becomes weak solution behind the moisture of absorbing air, and weak solution is by a heat exchanger 7 and the rear concentrated solution heat exchange of regenerating, afterwards in regenerator 19 interior heat absorptions regeneration; Outdoor new wind is by No. three heat exchangers 10 and indoor exhaust wind heat exchange, reclaim the cold of indoor exhaust wind, in solution moisture removing device 9, exchange with concentrated solution heat is wet, the loose airduct of sidewall from user room 12 behind the dehumidifying and cooling is sent into the room, the radiation cold plate 11 that the chilled water after the cooling concentrated solution leads to the roof in user room 12; The complete new wind of hot wet process is sent into from the side wall in user room 12, forms wall attachment jet, and the radiation cold plate 11 on the roof in air-spray and user room 12 continues the heat exchange cooling, finally reaches the temperature and humidity conditions of room requirement, finishes the Temperature and Humidity Control of space air.

Claims (4)

1. the absorption refrigeration and the solution dehumidifying air-conditioning system that reclaim based on solar heat, it is characterized in that: this air-conditioning system comprises one-level solar thermal collector (1), two-stage solar heat collector (2), domestic water case (4), cooler bin (5), cooling tower (6), a heat exchanger (7), No. two heat exchangers (8), solution moisture removing device (9), No. three heat exchangers (10), radiation cold plate (11), refrigerant water tank (13), condenser (14), evaporimeter (15), absorber (16), No. four heat exchangers (17), generator (18), regenerator (19) and unidirectional heat transmitter (20), the low temperature energy-storage box of one-level solar thermal collector (1) is communicated with the high temperature energy-storage case of two-stage solar heat collector (2) through unidirectional heat transmitter (20), the high temperature energy-storage case of two-stage solar heat collector (2) is communicated with domestic water case (4), domestic water case (4) is communicated with cooler bin (5), cooler bin (5) is communicated with respectively cooling tower (6) and absorber (16), cooling tower (6) is communicated with condenser (14), condenser (14) is communicated with respectively evaporimeter (15), absorber (16) and generator (18), absorber (16) is communicated with evaporimeter (15), absorber (16) is communicated with generator (18) through No. four heat exchangers (17), generator (18) is communicated with regenerator (19), regenerator (19) is communicated with high temperature energy-storage case and a heat exchanger (7) of two-stage solar heat collector (2), a heat exchanger (7) is communicated with respectively No. two heat exchangers (8) and solution moisture removing device (9), solution moisture removing device (9) is communicated with respectively No. three heat exchangers (10), the sidewall of No. two heat exchangers (8) and user room (12) airduct that falls apart, No. three heat exchangers (10) are communicated with the exhaust duct of new wind blast pipe and user room (12), No. two heat exchangers (8) are communicated with the radiation cold plate that is positioned at the roof (11) and the refrigerant water tank (13) in user room (12), refrigerant water tank (13) is communicated with radiation cold plate (11) and evaporimeter (15), and whole circulation consists of air-conditioning system.
2. absorption refrigeration and the solution dehumidifying air-conditioning system that reclaims based on solar heat according to claim 1 is characterized in that: wherein, electric heating device (3) is installed in the high temperature energy-storage case of two-stage solar heat collector (2).
3. absorption refrigeration and the solution dehumidifying air-conditioning system that reclaims based on solar heat according to claim 1, it is characterized in that: wherein, liquid medium in the low temperature energy-storage box of one-level solar thermal collector (1) is water, and liquid medium is the nanometer heat-transfer fluid in the high temperature energy-storage case of two-stage solar heat collector (2).
4. absorption refrigeration and the solution dehumidifying air-conditioning system that reclaims based on solar heat according to claim 1 is characterized in that: wherein, water tap is installed on the cooler bin (5).
CN201210493970.0A 2012-11-28 2012-11-28 Absorption refrigeration and solution dehumidification air-conditioning system based on solar heat recovery CN102997357B (en)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN105823155A (en) * 2016-05-20 2016-08-03 东莞理工学院 Absorption type dehumidification and absorption type refrigeration coupled air conditioning system
CN105841272A (en) * 2016-04-07 2016-08-10 西安交通大学 Temperature and humidity independent control type air-conditioning system driven by solar energy
CN106091187A (en) * 2016-06-08 2016-11-09 东南大学 The low-temperature heat source absorption coupling air-conditioning device of a kind of dehumidification solution condensation heat regeneration and regulation and control method

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN105841272A (en) * 2016-04-07 2016-08-10 西安交通大学 Temperature and humidity independent control type air-conditioning system driven by solar energy
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CN106091187B (en) * 2016-06-08 2019-03-19 东南大学 A kind of absorption coupling air-conditioning device of low-temperature heat source and regulation method

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